Search Results for: lichenoid

Differential Diagnosis in Dermatopathology

Discussions

…present in lichen nitidus. The combination of spongiosis and lichenoid granulomatous inflammation is unique to lichen striatus. Those features, in conjunction with the others listed in the columns at the beginning of this chapter, enable lichen niti…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Anagen Effluvium?

…l, 1999:736. “A 32 year-old woman developed generalised lichenoid eruptions on her body followed by diffuse loss of scalp hair of the anagen effluvium type. She was receiving several anti-tubercular drugs, including rifampicin, isonicotinic aci…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Apoptosis?

…ty of interface “dermatitides,” especially “lichenoid” ones, that are associated with nonviable keratocytes referred to in times past as Civatte bodies, colloid bodies, and hyaline bodies (pathologic cell death). Those bodies,…

Histologic Diagnosis of Inflammatory Skin Diseases

Images

…itis, infundibular, and perivascular dermatitis, psoriasiform lichenoid + 10.17.14B: Preponderance of neutrophils in the lichenoid infiltrate = Infection by atypical mycobacteria Acid-fast stain reveals countless bacilli in zones of suppuration in th…

Histologic Diagnosis of Inflammatory Skin Diseases

Tuberculosis verrucosa cutis

…Findings histopathologic Fully developed Granulomas dotting a lichenoid infiltrate of lymphocytes and plasma cells Beneath the zone of lichenoid lymphoplasmacytic infiltration, discrete granulomas surrounded by numerous lymphocytes and plasma cells M…

Histologic Diagnosis of Inflammatory Skin Diseases

Limitations of the Algorithmic Method

…ense enough or sufficiently band-like to be considered “lichenoid.” Nonetheless, by following the algorithm for “interface dermatitis” and pursuing either route, i.e., vacuolar or lichenoid, a histopathologist should be able t…

Histologic Diagnosis of Inflammatory Skin Diseases

Herpes gestationis

…tionis is nearly specific for those disorders. A psoriasiform lichenoid pattern or a spongiotic psoriasiform lichenoid pattern composed of lymphocytes and eosinophils also may be observed episodically in urticarial lesions of bullous pemphigoid and h…

Histologic Diagnosis of Inflammatory Skin Diseases

Images

…10.9.2A: Perivascular and interstitial dermatitis, interface, lichenoid + 10.9.2B: Lymphocytes and plasma cells = Acrodermatitis chronica atrophicans Bundles of collagen in the upper part of the dermis are thickened, testimony to how long-standing ha…

Differential Diagnosis in Dermatopathology

Discussions

…ssions of graft-versus-host disease. Another manifestation is lichenoid papules that histopathologically resemble closely lesions of lichen planus. If the process of graft-versus-host disease persists, lesions that are nearly indistinguishable morpho…